Converter apparatus
Abstract
Abstract DUAL CONVERTER APPARATUS INCLUDING FIRST AND SECOND CONVERTERS HAVING CONTROLLED RECTIFIER DEVICES, AND A LOAD CIRCUIT. A PHASE CONTROLLER CONTROLS THE CONDUCTION ANGLE OF THE CONTROLLED RECTIFIER DEVICES TO INTERCHANGE POWER BETWEEN ALTERNATING AND DIRECT CURRENT CIRCUITS. A BIDIRECTIONAL REFERENCE SIGNAL INDICATIVE OF THE DESIRED OPERATION OF THE CONVERTER APPARATUS IS SWITCHED IN RESPONSE TO PREDETERMINED CIRCUIT PARAMETERS TO PROVIDE A SUBSTANTIALLY UNIDIRECTIONAL REFERENCE SIGNAL. A FEEDBACK CIRCUIT PROVIDES A UNIDIRECTIONAL FEEDBACK SIGNAL RESPONSIVE TO THE ACTUAL OPERATION OF THE CONVERTER. A COMPARATOR PROVIDES AN ERROR SIGNAL FOR THE PHASE CONTROLLER IN RESPONSE TO THE UNIDIRECTIONAL REFERENCE AND FEEDBACK SIGNALS. THE DEAD TIME DURING WHICH NO LOAD CURRENT FLOWS, WHILE SWITCHING FROM ONE CONVERTER TO THE OTHER, IS SUBSTANTIALLY REDUCED BY A CIRCUIT WHICH FORCIBLY RETARDS THE CONDUCTION ANGLE TO A PREDETERMINED END STOP, SWITCHES THE CONVERTERS WHILE AT THIS END STOP, BIASES THE ERROR SIGNAL TO RAPIDLY ADVANCE THE CONDUCTION ANGLE AWAY FROM THE END STOP, AND TERMINATES THE BIASING OF THE ERROR SIGNAL WHEN THE ON-COMING CONVERTER PROVIDES LAOD CURRENT.
Inventors
- 👤 F Johnson
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |